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RREYNOLDS. SMOKE GONSUMING STEAM BOILER FURNAUB. No. 486,167. PatentedNov. 15, 1892.

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P. REYNOLDS. SMOKE UONSUMING STEAM BOILER-FURNAGE. No. 486,167. PatentedNov. 15,1892'. i

Ill H l l l I y l f i s- C K 5D l c'lll A l p 7 l .un 'A V E PATENTOFFICE.

FRANK REYNOLDS, oF OMAHA, NEBRASKA, AssIGNoR oF ONE-HALF To ALONZO B.HUNT,

OF SAME PLACE.

ASMOKE-CONSUMING STEAM-BOILER FU RNACE.

SPECIFICATION forming part of Letters Patent No. 486,167, dated November15, 1892.

Application filed August 29,1891.

To all whom it may concern,.- y

Be it known that I, FRANK REYNOLDS, of

Omaha,'in the county of Douglas and State of Nebraska, have inventedcertain useful Improvements in Smoke-Consuming Steam- Boiler Furnaces;and I do hereby declare that the following is a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, which form a part of this specification.

This invention has relation to new and novel 'smoke-consumingsteam-boiler furnaces. f

' The object of this invention is to providea steam-boiler furnacewherein the smoke may be consumed before leaving the furnace, as will bedescribed more fully hereinafter, and finally pointed out in the claims.

In the accompanying drawings, Figure l shows a front view of ahorizontal steamboiler furnace; Fig. 2, a transverse sectional viewthrough the combustion-chamber. Fig. 3 shows a longitudinal sectionalelevation. Fig. 4 shows a sectional elevation of an u"p right furnaceembodying my invention, and Fig. 5 a horizontal sectional View thereof.

Similar letters of reference refer to corresponding parts. l

A represents a steam-boiler furnace of any suitable dimension,constructed of fire-brick or any other suitable material, comprising thecombustion chamber B, the intermediate chamber C, and the furnace D, asclearly shown in Figs. 3 and 4:.

The combustion-chamber B is provided with the gratebars B and is incommunication with the flue or intermediate chamber C. The walls of thechamber are built in two parts, so as to provide the air-pocket, asshown. This pocket comprises the independent vertical flues E E--oneupon each side-and the top horizontal iiue E', which communicates at therear with the two side flues E E, descending in front by means of anarrow vertical liue F, leading into the combustionchamber B, as shownby the outlet-opening marked F. The rear wall A within the 5o chamber Bterminates asuitable distance below the top of the chamber, so as toleave a con'- Seria-l No. 404,151. (No model.)

tracted opening communicating with the intermediate chamber C.

The intermediate chamber C forms properly a part of the maincombustion-chamber D, and is provided at a point near the wall A with atransverse downwardly-extending deflecting-wall C', which endsapproximately on a line'with the Wall A', as illustrated in Fig. 3. Atthe rear the intermediate chamber C 6o is provided with an arch A havinga suitable number of openings, which starts from the wall C and curvesforward toward and against the wall C. l

The furnace D is of suitable masonry, within the upper portion of whichrests the boiler H in communication at the rear with the furnace, asillustrated. The walls of the furnace are also provided with an interiorair space or pocket running the full length of the wall 7o until a pointat the forward end where the space is contracted, so as to lead into thetransverse wall A and ending at the opening O", leading into the chamberC, as shown in dotted lines in Fig. 3. Thefurnace is built so asdecrease in capacity as it nears the rear wall, so that the heat isfocused or crowded before leaving and entering the boiler, as will beunderstood by referring to Fig. 3. The openings within the arch A oer ameans of 8o communication between the chamber C and the furnace D. Atthe rear I provide an opening H', covered by means of a suitable slide,so as to oer open-air communication with the chamber C. In Fig. 3 I haveshown by means 85 of an arrow the entrance of the air and at 0 yitsexit. In front I provide a slide-covered opening E", by means of whichthe air enters the space surrounding the combustion-chamber, making itsescape at the point marked F. 9o

All the masonry is of the best fire-brick, and when the furnace has beenconstructed ac.- cordin g to my description the operation of my deviceis as follows: The heat from the burning fuel within the combustionchamber 95 passes rst into the intermediate chamber C and then throughthe openings within the arch A into the furnace D, escaping through theboiler into the chimney. As the combustion-chamber becomes warmer,theair within roo the wall-space becomes expanded and heated and escapesinto the tire-box or combustionchamber, materially aiding thecombustion. The air within the Walls of the furnace escapes into theintermediate chamber C, intensifying the heat to such a degree that thesmoke particles are practically consumed, the smoke passing off invapors devoid of any7 floating particles, making thefurnace asmokeconsuming device, and thus fulfilling the aim and object of thisinvention.

In igs.4 and 5 I have shown,respectively, a vertical sectional elevationand a transverse sectlonal view of my smoke-consuming furnace asarranged for a vertical boiler.

As in the arrangement of the horizontal device, I dividethe furnace intothe combustionchamber B, the intermediate chamber C, and the furnace D,running to a focus at the upper end immediately below the boiler H.

In the arrangement of the furnace for the vertical boiler the curvedwall is eliminated, the heat being directed against the depending WallC', and then entering directly into the furnace D. To facilitatecleaning the furnace, I provide the opening K, closed by means of asuitable door.

The operation is as in the preceding case, the air entering by means ofthe openings E, thence into the horizontal pocket E', down the verticaltlue E, and out at F, in the rear, entering at the opening marked H',circulating aboutthe vertical way H", and out at 0', leading into thefurnace, as shown in Figs. t and 5.

The device is exceedingly simple of construction, efficient, and readilyoperated. The air within the Wall spaces or pockets is converted by thegreat heat into inflammable gases, and as such enter both thecombustionchamber and furnace, and thus assist in intensifying the heat,thereby raising it to such a degree that the floating products ofcombustion are disintegrated, leaving the chimney in the form ofsmokeless vapors.

It will be noticed that by my arrangement of the instrumentalities theheat in leaving the combustion-chamber is crowded or focused into asmaller chamber, into which there is a continued flow of combustiblevapors. From this chamber the heat is permitted to enter into thefurnace of greater 5o capacity than the intermediate chamber, the outletof this furnace being again contracted, so that the heat is againcrowded in leaving, as illustrated in the several gures.

Having thus described my invention and the best method I know ofoperating the same, what I claim as new, and desire to secure by UnitedStates Letters Patent, is-

l. In a boiler-furnace, the arrangement of a fuel-chamber provided withindependent vertical lines upon the sides and communieating at the rearwith a horizontal top flue and in front with a vertical flue leadinginto said fuel-chamber, the rear Wall of said charnber terminating asuitable distance below the top, a communicating intermediate chamber ofsmaller capacity than said fuel-chamber and provided at a point nearsaid rear Wall with a transverse downwardly-extending detlecting-walland an arch having a number of openings leading into a furnace, andopen-air lines surrounding said furnace and leading into saidintermediate chamber, said furnace decreasing in capacity at the rear,so that the heat is focused or crowded before entering the boiler-fines,all substantially as and for the purpose set forth.

2. In a boiler-furnace, the combination of the fuel-chamber B, providedwith the fines E, E, E', and F, leading into said chamber, the wall A',the chamber C, provided with the detlecting-Wall C and arch A, Walls Cand C, and the furnace D, provided with an openair pocket leading intothe wall A' and escaping into the chamber C, all arranged so that theheat in leaving the fuel-chamber is focused into the smaller chamber Cand from this into the furnace D of greater capacity, the outlet of thisfurnace being contracted, so that the heat is again focused in leaving,all substantially as and for the purpose set forth.

In testimony whereof I aix mysignature in presence of two witnesses.

G. W. Suns, A. B. HUNT.

